Add MSYS target for msys2 github workflow (#1075)

* Add MSYS target for msys2 github workflow

* Minimized differences in mingw/mingw64 CI workflows

.github/workflows/mingw-ci.yml

@@ -26,7 +26,7 @@ jobs:
           path: |
             C:\ProgramData\scoop
           key: scoop32 # static key: should be good forever
-      - name: Setup Windows  # This should almost never run if the cache works.
+      - name: Setup Windows # This should almost never run if the cache works.
         if: steps.cache.outputs.cache-hit != 'true'
         shell: powershell
         run: |
@@ -35,7 +35,7 @@ jobs:
           sudo scoop install git --global 
           sudo scoop install ninja --global
           sudo scoop install cmake --global
-          sudo scoop install gcc --arch 32bit --global 
+          sudo scoop install gcc --arch 32bit --global
           $env:path
           Write-Host 'Everything has been installed, you are good!'
       - name: Build and Test 32-bit x86

.github/workflows/mingw64-ci.yml

@@ -20,13 +20,12 @@ jobs:
     steps: # To reproduce what is below, start a powershell with administrative rights, using scoop *is* a good idea
       - uses: actions/checkout@v2
 
-
       - uses: actions/cache@v2 # we cache the scoop setup with 64-bit GCC
         id: cache
         with:
           path: |
             C:\ProgramData\scoop
-          key: scoop64  # static key: should be good forever
+          key: scoop64 # static key: should be good forever
       - name: Setup Windows # This should almost never run if the cache works.
         if: steps.cache.outputs.cache-hit != 'true'
         shell: powershell
@@ -52,4 +51,3 @@ jobs:
           cmake -DSIMDJSON_BUILD_STATIC=ON -DSIMDJSON_COMPETITION=OFF -DSIMDJSON_GOOGLE_BENCHMARKS=OFF -DSIMDJSON_ENABLE_THREADS=OFF ..
           cmake --build . --target parse_many_test jsoncheck basictests numberparsingcheck stringparsingcheck errortests integer_tests pointercheck --verbose
           ctest . -R "(parse_many_test|jsoncheck|basictests|stringparsingcheck|numberparsingcheck|errortests|integer_tests|pointercheck)"  --output-on-failure
-

.github/workflows/msys2.yml

@@ -9,7 +9,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        mingw: ["MINGW32", "MINGW64"]
+        mingw: ["MINGW32", "MINGW64", "MSYS"]
     env:
       CMAKE_GENERATOR: MSYS Makefiles
 
@@ -26,4 +26,3 @@ jobs:
           cmake -DSIMDJSON_BUILD_STATIC=ON -DSIMDJSON_DO_NOT_USE_THREADS_NO_MATTER_WHAT=ON ..
           cmake --build . --verbose
           ctest -j4 --output-on-failure -E checkperf
-